Website says I must use IE or Netscape communicator -- how to get around this with Konqueror? or Firefox?

Hi, everyone. I am trying to access the following website: www.unitedhealthcareonline.com However, I get the following message: We have detected that you are using a browser that is not supported by our site. Please make sure that you are using Microsoft Internet Explorer 4.0 or higher or Netscape Communicator 4.x. I normally use Firefox 1.0.7, but I also tried with Konqueror 3.4.0. Same result. I also tried changing the browser identification in Konqueror to say "I.E. (various versions) and Netscape (various versions). But I still get the same message after trying to change the browser identification. Anyone have a suggestion on how I can get into this site using either Firefox or Konqi? Thanks!! :o) Gil